$ git clone -n https://src.fedoraproject.org/rpms/hdf.git /var/lib/mock/f45-build-13381-450/root/chroot_tmpdir/scmroot/hdf
Cloning into '/var/lib/mock/f45-build-13381-450/root/chroot_tmpdir/scmroot/hdf'...
$ git fetch origin 0492b672df74c4316e4aa1fec3a5d4bb016b8c1b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/hdf
 * [new ref]         0492b672df74c4316e4aa1fec3a5d4bb016b8c1b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0492b67 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild