$ git clone -n https://src.fedoraproject.org/rpms/udpcast.git /var/lib/mock/f40-build-2331612-59097/root/chroot_tmpdir/scmroot/udpcast
Cloning into '/var/lib/mock/f40-build-2331612-59097/root/chroot_tmpdir/scmroot/udpcast'...
$ git fetch origin 6c5313e15ec0bf87dafae82adfc34d7a26235d13:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/udpcast
 * [new ref]         6c5313e15ec0bf87dafae82adfc34d7a26235d13 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6c5313e Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild