$ git clone -n https://src.fedoraproject.org/rpms/golang-github-klauspost-pgzip.git /var/lib/mock/f45-build-12130-439/root/chroot_tmpdir/scmroot/golang-github-klauspost-pgzip
Cloning into '/var/lib/mock/f45-build-12130-439/root/chroot_tmpdir/scmroot/golang-github-klauspost-pgzip'...
$ git fetch origin 31dd8bc759556dad5496581743880b7a77410f84:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-klauspost-pgzip
 * [new ref]         31dd8bc759556dad5496581743880b7a77410f84 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 31dd8bc Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild