$ git clone -n https://src.fedoraproject.org/rpms/rust-codespan.git /var/lib/mock/f40-build-2035427-47965/root/chroot_tmpdir/scmroot/rust-codespan
Cloning into '/var/lib/mock/f40-build-2035427-47965/root/chroot_tmpdir/scmroot/rust-codespan'...
$ git fetch origin a3e0fabbad9f012faa38ec79c1f22017db55b06c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-codespan
 * [new ref]         a3e0fabbad9f012faa38ec79c1f22017db55b06c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a3e0fab Initial import (#2242765)