$ git clone -n https://src.fedoraproject.org/rpms/contractor.git /var/lib/mock/f31-build-57623-28370/root/chroot_tmpdir/scmroot/contractor
Cloning into '/var/lib/mock/f31-build-57623-28370/root/chroot_tmpdir/scmroot/contractor'...
$ git reset --hard 7c7f3f5f608b52f92a8255e2a38a81fc5a8b05ba
HEAD is now at 7c7f3f5 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild