$ git clone -n https://src.fedoraproject.org/rpms/ruby-gnome2.git /var/lib/mock/f40-build-777891-129619/root/chroot_tmpdir/scmroot/ruby-gnome2
Cloning into '/var/lib/mock/f40-build-777891-129619/root/chroot_tmpdir/scmroot/ruby-gnome2'...
$ git fetch origin da904ea631b3af2965547791ac8e862b2a787720:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ruby-gnome2
 * [new ref]         da904ea631b3af2965547791ac8e862b2a787720 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at da904ea Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild