$ git clone -n https://src.fedoraproject.org/rpms/gtkglext.git /var/lib/mock/f40-build-2003429-44842/root/chroot_tmpdir/scmroot/gtkglext
Cloning into '/var/lib/mock/f40-build-2003429-44842/root/chroot_tmpdir/scmroot/gtkglext'...
$ git fetch origin bf8cca3b61e5393723d84a469107cbe7c1b8405d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gtkglext
 * [new ref]         bf8cca3b61e5393723d84a469107cbe7c1b8405d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bf8cca3 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild