$ git clone -n https://src.fedoraproject.org/rpms/python-collectd_cvmfs.git /var/lib/mock/f45-build-30050-642/root/chroot_tmpdir/scmroot/python-collectd_cvmfs
Cloning into '/var/lib/mock/f45-build-30050-642/root/chroot_tmpdir/scmroot/python-collectd_cvmfs'...
$ git fetch origin b272222d2389f64f179a18e3958d99acfbb00582:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-collectd_cvmfs
 * [new ref]         b272222d2389f64f179a18e3958d99acfbb00582 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b272222 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild