$ git clone -n https://src.fedoraproject.org/rpms/librsync.git /var/lib/mock/f40-build-2295170-56315/root/chroot_tmpdir/scmroot/librsync
Cloning into '/var/lib/mock/f40-build-2295170-56315/root/chroot_tmpdir/scmroot/librsync'...
$ git fetch origin 4dea850964739515fc1d85278e59e4a99e0092c5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/librsync
 * [new ref]         4dea850964739515fc1d85278e59e4a99e0092c5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4dea850 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild