$ git clone -n https://src.fedoraproject.org/rpms/buildah.git /var/lib/mock/f45-build-19956-565/root/chroot_tmpdir/scmroot/buildah
Cloning into '/var/lib/mock/f45-build-19956-565/root/chroot_tmpdir/scmroot/buildah'...
$ git fetch origin e27441b37471ce26611e7b4a5864da39c0a9f8ec:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/buildah
 * [new ref]         e27441b37471ce26611e7b4a5864da39c0a9f8ec -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e27441b Update to 1.45.1 upstream release