$ git clone -n https://src.fedoraproject.org/rpms/libraw1394.git /var/lib/mock/f45-build-16838-491/root/chroot_tmpdir/scmroot/libraw1394
Cloning into '/var/lib/mock/f45-build-16838-491/root/chroot_tmpdir/scmroot/libraw1394'...
$ git fetch origin ebbe16dab2700babbaee081a75570434ef9a5369:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libraw1394
 * [new ref]         ebbe16dab2700babbaee081a75570434ef9a5369 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ebbe16d Do some housekeeping