$ git clone -n https://src.fedoraproject.org/rpms/rust-afterburn.git /var/lib/mock/f40-build-2657909-66917/root/chroot_tmpdir/scmroot/rust-afterburn
Cloning into '/var/lib/mock/f40-build-2657909-66917/root/chroot_tmpdir/scmroot/rust-afterburn'...
$ git fetch origin ca3ecaad5ff3ca584b264d61d6a7668613846cde:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-afterburn
 * [new ref]         ca3ecaad5ff3ca584b264d61d6a7668613846cde -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ca3ecaa Update license list with Zlib