$ git clone -n https://src.fedoraproject.org/rpms/tcl-tcludp.git /var/lib/mock/f42-build-868788-176267/root/chroot_tmpdir/scmroot/tcl-tcludp
Cloning into '/var/lib/mock/f42-build-868788-176267/root/chroot_tmpdir/scmroot/tcl-tcludp'...
$ git fetch origin 29ec49920a15994af0a3401e92bafb4d8e990edd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tcl-tcludp
 * [new ref]         29ec49920a15994af0a3401e92bafb4d8e990edd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 29ec499 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild