$ git clone -n https://src.fedoraproject.org/rpms/bdsync.git /var/lib/mock/f41-build-762787-13458/root/chroot_tmpdir/scmroot/bdsync
Cloning into '/var/lib/mock/f41-build-762787-13458/root/chroot_tmpdir/scmroot/bdsync'...
$ git fetch origin 154e60ef1593c1394c9b8417453a7329c13a2d0c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bdsync
 * [new ref]         154e60ef1593c1394c9b8417453a7329c13a2d0c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 154e60e Eliminate use of obsolete %patchN syntax (#2283636)