$ git clone -n https://src.fedoraproject.org/rpms/slapi-nis.git /var/lib/mock/f41-build-814527-14252/root/chroot_tmpdir/scmroot/slapi-nis
Cloning into '/var/lib/mock/f41-build-814527-14252/root/chroot_tmpdir/scmroot/slapi-nis'...
$ git fetch origin 3cb2b09ccfbe37d307e67eb89c23faa892ca1802:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/slapi-nis
 * [new ref]         3cb2b09ccfbe37d307e67eb89c23faa892ca1802 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3cb2b09 Eliminate use of obsolete %patchN syntax (#2283636)