$ git clone -n https://src.fedoraproject.org/rpms/rust-sha2_0.9.git /var/lib/mock/f40-build-2083732-49961/root/chroot_tmpdir/scmroot/rust-sha2_0.9
Cloning into '/var/lib/mock/f40-build-2083732-49961/root/chroot_tmpdir/scmroot/rust-sha2_0.9'...
$ git fetch origin a06f05bc41e3e6ea8a9f3b29678b51fd4d6d891a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-sha2_0.9
 * [new ref]         a06f05bc41e3e6ea8a9f3b29678b51fd4d6d891a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a06f05b Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild