$ git clone -n https://src.fedoraproject.org/rpms/ursa-major.git /var/lib/mock/f40-build-1016477-17896/root/chroot_tmpdir/scmroot/ursa-major
Cloning into '/var/lib/mock/f40-build-1016477-17896/root/chroot_tmpdir/scmroot/ursa-major'...
$ git fetch origin a5b8c7bf1a8cbb01241907016406c32cd9997e27:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ursa-major
 * [new ref]         a5b8c7bf1a8cbb01241907016406c32cd9997e27 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a5b8c7b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild