$ git clone -n https://src.fedoraproject.org/rpms/gc.git /var/lib/mock/f31-build-53302-27831/root/chroot_tmpdir/scmroot/gc
Cloning into '/var/lib/mock/f31-build-53302-27831/root/chroot_tmpdir/scmroot/gc'...
$ git reset --hard 0ea34fde94df5628fb2155adedb5104a1c8a40c0
HEAD is now at 0ea34fd - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild