$ git clone -n https://src.fedoraproject.org/rpms/chromium-bsu.git /var/lib/mock/f31-build-64940-29617/root/thebuilddir/tmp/scmroot/chromium-bsu
Cloning into '/var/lib/mock/f31-build-64940-29617/root/thebuilddir/tmp/scmroot/chromium-bsu'...
$ git reset --hard 7e5af964c72a2f56551854942887f4f8328d1bdc
HEAD is now at 7e5af96 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild