$ git clone -n https://src.fedoraproject.org/rpms/libg15render.git /var/lib/mock/f40-build-2007329-45251/root/chroot_tmpdir/scmroot/libg15render
Cloning into '/var/lib/mock/f40-build-2007329-45251/root/chroot_tmpdir/scmroot/libg15render'...
$ git fetch origin 3f3975b9952bb943e8e29c26ab19b3fd66c9cbb1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libg15render
 * [new ref]         3f3975b9952bb943e8e29c26ab19b3fd66c9cbb1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3f3975b Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild