$ git clone -n https://src.fedoraproject.org/rpms/umr.git /var/lib/mock/f40-build-2403084-60556/root/chroot_tmpdir/scmroot/umr
Cloning into '/var/lib/mock/f40-build-2403084-60556/root/chroot_tmpdir/scmroot/umr'...
$ git fetch origin 3bfbafb8a077a5322eb214c15ab9a06ce0d70506:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/umr
 * [new ref]         3bfbafb8a077a5322eb214c15ab9a06ce0d70506 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3bfbafb Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild