$ git clone -n https://src.fedoraproject.org/rpms/foxtrotgps.git /var/lib/mock/f41-build-1034914-18652/root/chroot_tmpdir/scmroot/foxtrotgps
Cloning into '/var/lib/mock/f41-build-1034914-18652/root/chroot_tmpdir/scmroot/foxtrotgps'...
$ git fetch origin a530f3318d6099a55f5c7e8fe402c9f6a60515f5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/foxtrotgps
 * [new ref]         a530f3318d6099a55f5c7e8fe402c9f6a60515f5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a530f33 Eliminate use of obsolete %patchN syntax (#2283636)