$ git clone -n https://src.fedoraproject.org/rpms/meshbird.git /var/lib/mock/f40-build-2297249-56450/root/chroot_tmpdir/scmroot/meshbird
Cloning into '/var/lib/mock/f40-build-2297249-56450/root/chroot_tmpdir/scmroot/meshbird'...
$ git fetch origin b9702c881910009550dcae10a9c1cced6b9d13a7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/meshbird
 * [new ref]         b9702c881910009550dcae10a9c1cced6b9d13a7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b9702c8 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild