$ git clone -n https://src.fedoraproject.org/rpms/rust-version-sync0.8.git /var/lib/mock/f41-build-side-1-3099424-39334/root/chroot_tmpdir/scmroot/rust-version-sync0.8
Cloning into '/var/lib/mock/f41-build-side-1-3099424-39334/root/chroot_tmpdir/scmroot/rust-version-sync0.8'...
$ git fetch origin ee83dd9060fc317870a1ffd4718344714603b62b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-version-sync0.8
 * [new ref]         ee83dd9060fc317870a1ffd4718344714603b62b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ee83dd9 compat package no longer needed