$ git clone -n https://src.fedoraproject.org/rpms/netsurf-buildsystem.git /var/lib/mock/f40-build-2703714-70852/root/chroot_tmpdir/scmroot/netsurf-buildsystem
Cloning into '/var/lib/mock/f40-build-2703714-70852/root/chroot_tmpdir/scmroot/netsurf-buildsystem'...
$ git fetch origin 3a70a1c0ceb7f61e48ef093a3d847ec995b37f03:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/netsurf-buildsystem
 * [new ref]         3a70a1c0ceb7f61e48ef093a3d847ec995b37f03 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3a70a1c Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild