$ git clone -n https://src.fedoraproject.org/rpms/rocs.git /var/lib/mock/f42-build-side-1-3586061-46913/root/chroot_tmpdir/scmroot/rocs
Cloning into '/var/lib/mock/f42-build-side-1-3586061-46913/root/chroot_tmpdir/scmroot/rocs'...
$ git fetch origin 4d063a20cd69cf320c1780ca05238ccaafd79f9e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rocs
 * [new ref]         4d063a20cd69cf320c1780ca05238ccaafd79f9e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4d063a2 25.04.3