$ git clone -n https://src.fedoraproject.org/rpms/git-review.git /var/lib/mock/f45-build-11081-426/root/chroot_tmpdir/scmroot/git-review
Cloning into '/var/lib/mock/f45-build-11081-426/root/chroot_tmpdir/scmroot/git-review'...
$ git fetch origin dea35101a6af8b54f8d62d75f6def7c83c701965:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/git-review
 * [new ref]         dea35101a6af8b54f8d62d75f6def7c83c701965 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dea3510 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild