$ git clone -n https://src.fedoraproject.org/rpms/fmf.git /var/lib/mock/f39-build-1697739-41182/root/chroot_tmpdir/scmroot/fmf
Cloning into '/var/lib/mock/f39-build-1697739-41182/root/chroot_tmpdir/scmroot/fmf'...
$ git fetch origin a7010a89e83815efad3ea2c3a5f6c48aa34d61dc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fmf
 * [new ref]         a7010a89e83815efad3ea2c3a5f6c48aa34d61dc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a7010a8 Release fmf-1.3.0