$ git clone -n https://src.fedoraproject.org/rpms/gtk+extra.git /var/lib/mock/f40-build-802465-144020/root/chroot_tmpdir/scmroot/gtk+extra
Cloning into '/var/lib/mock/f40-build-802465-144020/root/chroot_tmpdir/scmroot/gtk+extra'...
$ git fetch origin 8c6f6cbdadd09fc919af430f41713e0a3237deeb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gtk+extra
 * [new ref]         8c6f6cbdadd09fc919af430f41713e0a3237deeb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8c6f6cb Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild