$ git clone -n https://src.fedoraproject.org/rpms/golang-github-bep-workers.git /var/lib/mock/f45-build-11762-434/root/chroot_tmpdir/scmroot/golang-github-bep-workers
Cloning into '/var/lib/mock/f45-build-11762-434/root/chroot_tmpdir/scmroot/golang-github-bep-workers'...
$ git fetch origin 4fd349614ebf9943c3845ee8082fddce23f4b3d1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-bep-workers
 * [new ref]         4fd349614ebf9943c3845ee8082fddce23f4b3d1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4fd3496 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild