$ git clone -n https://src.fedoraproject.org/rpms/gretl.git /var/lib/mock/f39-build-1973065-43327/root/chroot_tmpdir/scmroot/gretl
Cloning into '/var/lib/mock/f39-build-1973065-43327/root/chroot_tmpdir/scmroot/gretl'...
$ git fetch origin 22b039009d1c75c5180d204cdad0c06e9ab3d747:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gretl
 * [new ref]         22b039009d1c75c5180d204cdad0c06e9ab3d747 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 22b0390 minor fix for path