diff --git a/projects/bind9/project.yaml b/projects/bind9/project.yaml
index ab0424851..ef26dfed5 100644
--- a/projects/bind9/project.yaml
+++ b/projects/bind9/project.yaml
@@ -15,3 +15,4 @@ sanitizers:
   - memory:
      experimental: True
   - undefined
+main_repo: 'https://gitlab.isc.org/isc-projects/bind9.git'
diff --git a/projects/boringssl/project.yaml b/projects/boringssl/project.yaml
index 689ee6482..ab49fcb97 100644
--- a/projects/boringssl/project.yaml
+++ b/projects/boringssl/project.yaml
@@ -8,3 +8,4 @@ sanitizers:
 - address
 - undefined
 - memory
+main_repo: 'https://boringssl.googlesource.com/boringssl'
diff --git a/projects/cairo/project.yaml b/projects/cairo/project.yaml
index 37b8def43..7dcdd8043 100644
--- a/projects/cairo/project.yaml
+++ b/projects/cairo/project.yaml
@@ -4,3 +4,4 @@ primary_contact: security-tps@google.com
 sanitizers:
   - address
   - undefined
+main_repo: 'https://gitlab.freedesktop.org/cairo/cairo.git'
diff --git a/projects/cjson/project.yaml b/projects/cjson/project.yaml
index 9d72719ab..25128b456 100644
--- a/projects/cjson/project.yaml
+++ b/projects/cjson/project.yaml
@@ -14,3 +14,4 @@ sanitizers:
   - undefined
   - memory
   - dataflow
+main_repo: 'https://github.com/DaveGamble/cJSON.git'
diff --git a/projects/double-conversion/project.yaml b/projects/double-conversion/project.yaml
index 032608c08..2e72b538a 100644
--- a/projects/double-conversion/project.yaml
+++ b/projects/double-conversion/project.yaml
@@ -13,3 +13,4 @@ labels:
 architectures:
   - x86_64
   - i386
+main_repo: 'https://github.com/google/double-conversion.git'
diff --git a/projects/eigen/project.yaml b/projects/eigen/project.yaml
index 3ac6020fa..b64d68b18 100644
--- a/projects/eigen/project.yaml
+++ b/projects/eigen/project.yaml
@@ -8,3 +8,4 @@ sanitizers:
 architectures:
   - x86_64
   - i386
+main_repo: 'https://gitlab.com/libeigen/eigen.git'
diff --git a/projects/ffmpeg/project.yaml b/projects/ffmpeg/project.yaml
index a17ee7ef3..a33dda244 100644
--- a/projects/ffmpeg/project.yaml
+++ b/projects/ffmpeg/project.yaml
@@ -9,3 +9,4 @@ auto_ccs:
  - "twsmith@mozilla.com"
  - "kempfjb@gmail.com"
 selective_unpack: true
+main_repo: 'https://git.ffmpeg.org/ffmpeg.git'
diff --git a/projects/gdk-pixbuf/project.yaml b/projects/gdk-pixbuf/project.yaml
index ccca32e66..90c4ed3dd 100644
--- a/projects/gdk-pixbuf/project.yaml
+++ b/projects/gdk-pixbuf/project.yaml
@@ -4,3 +4,4 @@ primary_contact: ebassi@gnome.org
 sanitizers:
   - address
   - undefined
+main_repo: 'https://gitlab.gnome.org/GNOME/gdk-pixbuf.git'
diff --git a/projects/gstreamer/project.yaml b/projects/gstreamer/project.yaml
index 4c833b0bc..dd0fe14fe 100644
--- a/projects/gstreamer/project.yaml
+++ b/projects/gstreamer/project.yaml
@@ -9,3 +9,4 @@ auto_ccs:
  - "saunierthibault@gmail.com"
  - "ystreet00@gmail.com"
  - "thaytan@noraisin.net"
+main_repo: 'https://gitlab.freedesktop.org/gstreamer/gstreamer.git'
diff --git a/projects/karchive/project.yaml b/projects/karchive/project.yaml
index e403e7ebf..0e023cd43 100644
--- a/projects/karchive/project.yaml
+++ b/projects/karchive/project.yaml
@@ -5,3 +5,4 @@ sanitizers:
   - address
   - memory
   - undefined
+main_repo: 'https://invent.kde.org/frameworks/karchive.git'
diff --git a/projects/libcacard/project.yaml b/projects/libcacard/project.yaml
index 9227a4849..534af5c5c 100644
--- a/projects/libcacard/project.yaml
+++ b/projects/libcacard/project.yaml
@@ -6,3 +6,4 @@ auto_ccs:
 sanitizers:
  - address
  - undefined
+main_repo: 'https://gitlab.freedesktop.org/spice/libcacard.git'
diff --git a/projects/libidn/project.yaml b/projects/libidn/project.yaml
index 9dc0f44b8..6cd7293f7 100644
--- a/projects/libidn/project.yaml
+++ b/projects/libidn/project.yaml
@@ -4,3 +4,4 @@ primary_contact: "rockdaboot@gmail.com"
 auto_ccs:
   - "tim.ruehsen@gmx.de"
   - "simon@josefsson.org"
+main_repo: 'https://git.savannah.gnu.org/git/libidn.git'
diff --git a/projects/libldac/project.yaml b/projects/libldac/project.yaml
index 3fb66f061..189adf0bd 100644
--- a/projects/libldac/project.yaml
+++ b/projects/libldac/project.yaml
@@ -19,3 +19,4 @@ fuzzing_engines:
 sanitizers:
   - address
   - dataflow
+main_repo: 'https://android.googlesource.com/platform/external/libldac'
diff --git a/projects/libssh/project.yaml b/projects/libssh/project.yaml
index 83890647a..5c643216c 100644
--- a/projects/libssh/project.yaml
+++ b/projects/libssh/project.yaml
@@ -9,3 +9,4 @@ sanitizers:
   - address
   - memory
   - undefined
+main_repo: 'https://git.libssh.org/projects/libssh.git'
diff --git a/projects/libtasn1/project.yaml b/projects/libtasn1/project.yaml
index 2fc0067db..9380ae94a 100644
--- a/projects/libtasn1/project.yaml
+++ b/projects/libtasn1/project.yaml
@@ -16,3 +16,4 @@ sanitizers:
   - memory
   - undefined
   - dataflow
+main_repo: 'https://gitlab.com/gnutls/libtasn1.git'
diff --git a/projects/libwebp/project.yaml b/projects/libwebp/project.yaml
index 8beac0180..593cd8a5c 100644
--- a/projects/libwebp/project.yaml
+++ b/projects/libwebp/project.yaml
@@ -19,3 +19,4 @@ vendor_ccs:
   - aosmond@mozilla.com
   - tnikkel@mozilla.com
   - twsmith@mozilla.com
+main_repo: 'https://chromium.googlesource.com/webm/libwebp'
diff --git a/projects/opus/project.yaml b/projects/opus/project.yaml
index 1caff58b6..de5d7e30f 100644
--- a/projects/opus/project.yaml
+++ b/projects/opus/project.yaml
@@ -15,3 +15,4 @@ sanitizers:
   - undefined
   - memory
   - dataflow
+main_repo: 'https://gitlab.xiph.org/xiph/opus.git'
diff --git a/projects/pigweed/project.yaml b/projects/pigweed/project.yaml
index 253bffab3..fb62ec641 100644
--- a/projects/pigweed/project.yaml
+++ b/projects/pigweed/project.yaml
@@ -6,3 +6,4 @@ auto_ccs:
  - "mohrr@google.com"
 sanitizers:
 - address
+main_repo: 'https://pigweed.googlesource.com/pigweed/pigweed'
diff --git a/projects/powerdns/project.yaml b/projects/powerdns/project.yaml
index 3390114a6..770519abe 100644
--- a/projects/powerdns/project.yaml
+++ b/projects/powerdns/project.yaml
@@ -6,3 +6,4 @@ auto_ccs:
 sanitizers:
   - address
   - undefined
+main_repo: 'https://github.com/PowerDNS/pdns.git'
diff --git a/projects/re2/project.yaml b/projects/re2/project.yaml
index ca97e138d..0fc1f837b 100644
--- a/projects/re2/project.yaml
+++ b/projects/re2/project.yaml
@@ -8,3 +8,4 @@ sanitizers:
 architectures:
   - x86_64
   - i386
+main_repo: 'https://code.googlesource.com/re2'
diff --git a/projects/skcms/project.yaml b/projects/skcms/project.yaml
index 83242acf4..c92ee3bce 100644
--- a/projects/skcms/project.yaml
+++ b/projects/skcms/project.yaml
@@ -11,3 +11,4 @@ sanitizers:
 architectures:
   - x86_64
   - i386
+main_repo: 'https://skia.googlesource.com/skcms.git'
diff --git a/projects/skia/project.yaml b/projects/skia/project.yaml
index 166e1c5dd..03504e9db 100644
--- a/projects/skia/project.yaml
+++ b/projects/skia/project.yaml
@@ -18,3 +18,4 @@ sanitizers:
  - memory
 help_url: "https://skia.org/dev/testing/fuzz"
 builds_per_day: 4
+main_repo: 'https://skia.googlesource.com/skia.git'
diff --git a/projects/speex/project.yaml b/projects/speex/project.yaml
index 9d05c72b8..e083b9f6b 100644
--- a/projects/speex/project.yaml
+++ b/projects/speex/project.yaml
@@ -14,3 +14,4 @@ sanitizers:
   - undefined
   - memory
   - dataflow
+main_repo: 'https://gitlab.xiph.org/xiph/speex.git'
diff --git a/projects/tor/project.yaml b/projects/tor/project.yaml
index b280703f7..d712260a7 100644
--- a/projects/tor/project.yaml
+++ b/projects/tor/project.yaml
@@ -10,3 +10,4 @@ sanitizers:
  - address
  - memory
  - undefined
+main_repo: 'https://git.torproject.org/tor.git'
diff --git a/projects/vorbis/project.yaml b/projects/vorbis/project.yaml
index 94fe9abb5..a4e2ddcc7 100644
--- a/projects/vorbis/project.yaml
+++ b/projects/vorbis/project.yaml
@@ -16,3 +16,4 @@ sanitizers:
   - dataflow
   - memory
   - undefined
+main_repo: 'https://gitlab.xiph.org/xiph/vorbis.git'
diff --git a/projects/wget/project.yaml b/projects/wget/project.yaml
index 9db265be2..367bda9b1 100644
--- a/projects/wget/project.yaml
+++ b/projects/wget/project.yaml
@@ -5,3 +5,4 @@ auto_ccs:
   - "tim.ruehsen@gmx.de"
   - "darnir@gmail.com"
   - "gscrivan@redhat.com"
+main_repo: 'https://git.savannah.gnu.org/git/wget.git'
diff --git a/projects/wxwidgets/project.yaml b/projects/wxwidgets/project.yaml
index 987f4a853..8abf05eba 100644
--- a/projects/wxwidgets/project.yaml
+++ b/projects/wxwidgets/project.yaml
@@ -1,3 +1,4 @@
 homepage: "https://www.wxwidgets.org/"
 language: c++
 primary_contact: "vzeitlin@gmail.com"
+main_repo: 'https://github.com/wxWidgets/wxWidgets.git'
diff --git a/projects/xz/project.yaml b/projects/xz/project.yaml
index 9d6048c8d..e611259e3 100644
--- a/projects/xz/project.yaml
+++ b/projects/xz/project.yaml
@@ -13,3 +13,4 @@ sanitizers:
   - dataflow
   - memory
   - undefined
+main_repo: 'https://git.tukaani.org/xz.git'