$ git clone -n https://src.fedoraproject.org/rpms/lammps.git /var/lib/mock/f38-build-side-42-init-devel-1390996-30721/root/chroot_tmpdir/scmroot/lammps
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1390996-30721/root/chroot_tmpdir/scmroot/lammps'...
$ git fetch origin bc25d9ce69429a1ce1915b83c4511c523c680515:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lammps
 * [new ref]         bc25d9ce69429a1ce1915b83c4511c523c680515 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bc25d9c Version bump to 20220623.4