$ git clone -n https://src.fedoraproject.org/rpms/gmsh.git /var/lib/mock/f39-build-1756502-41479/root/chroot_tmpdir/scmroot/gmsh
Cloning into '/var/lib/mock/f39-build-1756502-41479/root/chroot_tmpdir/scmroot/gmsh'...
$ git fetch origin b6d7ec695a1916240b0297bab293a7558d6aa871:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gmsh
 * [new ref]         b6d7ec695a1916240b0297bab293a7558d6aa871 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b6d7ec6 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild