$ git clone -n https://src.fedoraproject.org/rpms/golang-github-gofrs-flock.git /var/lib/mock/f45-build-11971-436/root/chroot_tmpdir/scmroot/golang-github-gofrs-flock
Cloning into '/var/lib/mock/f45-build-11971-436/root/chroot_tmpdir/scmroot/golang-github-gofrs-flock'...
$ git fetch origin d1c7c4fab4271eea170ddd5828ce64dde7421b58:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-gofrs-flock
 * [new ref]         d1c7c4fab4271eea170ddd5828ce64dde7421b58 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d1c7c4f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild