$ git clone -n https://src.fedoraproject.org/rpms/rust-siphasher0.3.git /var/lib/mock/f40-build-2716693-72674/root/chroot_tmpdir/scmroot/rust-siphasher0.3
Cloning into '/var/lib/mock/f40-build-2716693-72674/root/chroot_tmpdir/scmroot/rust-siphasher0.3'...
$ git fetch origin 8b53fac8751dbff76c52d3bb57b307680e527a40:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-siphasher0.3
 * [new ref]         8b53fac8751dbff76c52d3bb57b307680e527a40 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8b53fac Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild