$ git clone -n https://src.fedoraproject.org/rpms/cpmtools.git /var/lib/mock/f41-build-1290519-23344/root/chroot_tmpdir/scmroot/cpmtools
Cloning into '/var/lib/mock/f41-build-1290519-23344/root/chroot_tmpdir/scmroot/cpmtools'...
$ git fetch origin 41d0f2827ac4c7ab5c0c9aa6d5b5c98a9ae7c0da:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cpmtools
 * [new ref]         41d0f2827ac4c7ab5c0c9aa6d5b5c98a9ae7c0da -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 41d0f28 Eliminate use of obsolete %patchN syntax (#2283636)