$ git clone -n https://src.fedoraproject.org/rpms/golang-github-tidwall-match.git /var/lib/mock/f45-build-12538-442/root/chroot_tmpdir/scmroot/golang-github-tidwall-match
Cloning into '/var/lib/mock/f45-build-12538-442/root/chroot_tmpdir/scmroot/golang-github-tidwall-match'...
$ git fetch origin 50ad45f86a815865d9a070a04dc7847fbeedc696:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-tidwall-match
 * [new ref]         50ad45f86a815865d9a070a04dc7847fbeedc696 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 50ad45f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild