$ git clone -n https://src.fedoraproject.org/rpms/geomorph.git /var/lib/mock/f41-build-816173-14288/root/chroot_tmpdir/scmroot/geomorph
Cloning into '/var/lib/mock/f41-build-816173-14288/root/chroot_tmpdir/scmroot/geomorph'...
$ git fetch origin c9384124d4e015ea6e972b323a6e8ca1b5400a25:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/geomorph
 * [new ref]         c9384124d4e015ea6e972b323a6e8ca1b5400a25 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c938412 Eliminate use of obsolete %patchN syntax (#2283636)