$ git clone -n https://src.fedoraproject.org/rpms/mrcpp.git /var/lib/mock/f40-build-792201-138204/root/chroot_tmpdir/scmroot/mrcpp
Cloning into '/var/lib/mock/f40-build-792201-138204/root/chroot_tmpdir/scmroot/mrcpp'...
$ git fetch origin 13d7dbafadb1a28d602200ff07374930528a0edd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mrcpp
 * [new ref]         13d7dbafadb1a28d602200ff07374930528a0edd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 13d7dba Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild