$ git clone -n https://src.fedoraproject.org/rpms/libopkele.git /var/lib/mock/f41-build-817571-14305/root/chroot_tmpdir/scmroot/libopkele
Cloning into '/var/lib/mock/f41-build-817571-14305/root/chroot_tmpdir/scmroot/libopkele'...
$ git fetch origin 875d11210e1db8e7366553b4a768b68067ae7fee:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libopkele
 * [new ref]         875d11210e1db8e7366553b4a768b68067ae7fee -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 875d112 Eliminate use of obsolete %patchN syntax (#2283636)