$ git clone -n https://src.fedoraproject.org/rpms/libpar2.git /var/lib/mock/f41-build-886508-16639/root/chroot_tmpdir/scmroot/libpar2
Cloning into '/var/lib/mock/f41-build-886508-16639/root/chroot_tmpdir/scmroot/libpar2'...
$ git fetch origin a14ee20252a44e0a3f4b679426ec5b17a6e297f8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libpar2
 * [new ref]         a14ee20252a44e0a3f4b679426ec5b17a6e297f8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a14ee20 Eliminate use of obsolete %patchN syntax (#2283636)