$ git clone -n https://src.fedoraproject.org/rpms/cronolog.git /var/lib/mock/f41-build-1290534-23344/root/chroot_tmpdir/scmroot/cronolog
Cloning into '/var/lib/mock/f41-build-1290534-23344/root/chroot_tmpdir/scmroot/cronolog'...
$ git fetch origin 71a73665e55ae96547a541ba197f1db2bf04f830:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cronolog
 * [new ref]         71a73665e55ae96547a541ba197f1db2bf04f830 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 71a7366 Eliminate use of obsolete %patchN syntax (#2283636)