$ git clone -n https://src.fedoraproject.org/rpms/gkermit.git /var/lib/mock/f41-build-876100-16313/root/chroot_tmpdir/scmroot/gkermit
Cloning into '/var/lib/mock/f41-build-876100-16313/root/chroot_tmpdir/scmroot/gkermit'...
$ git fetch origin cd10486a3741a6319a660d217031ee24012ad300:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gkermit
 * [new ref]         cd10486a3741a6319a660d217031ee24012ad300 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cd10486 Eliminate use of obsolete %patchN syntax (#2283636)