$ git clone -n https://src.fedoraproject.org/rpms/tart.git /var/lib/mock/f40-build-776943-129159/root/chroot_tmpdir/scmroot/tart
Cloning into '/var/lib/mock/f40-build-776943-129159/root/chroot_tmpdir/scmroot/tart'...
$ git fetch origin fbcf9f063545ddd76c54eb21b52f8c0f9abe2d37:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tart
 * [new ref]         fbcf9f063545ddd76c54eb21b52f8c0f9abe2d37 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fbcf9f0 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild