$ git clone -n https://src.fedoraproject.org/rpms/mesa.git /var/lib/mock/f41-build-side-2-python-2722666-30722/root/chroot_tmpdir/scmroot/mesa
Cloning into '/var/lib/mock/f41-build-side-2-python-2722666-30722/root/chroot_tmpdir/scmroot/mesa'...
$ git fetch origin be6ca888b79e25bce6decaa88c610a3ca7602c9d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mesa
 * [new ref]         be6ca888b79e25bce6decaa88c610a3ca7602c9d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at be6ca88 Rebuild for LLVM 19 Final