$ git clone -n https://src.fedoraproject.org/rpms/rust-llvm-bitcode.git /var/lib/mock/f38-build-side-42-init-devel-1083123-29882/root/chroot_tmpdir/scmroot/rust-llvm-bitcode
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1083123-29882/root/chroot_tmpdir/scmroot/rust-llvm-bitcode'...
$ git fetch origin 96119f950d7b298f4ad765a63160b19cfe01bf44:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-llvm-bitcode
 * [new ref]         96119f950d7b298f4ad765a63160b19cfe01bf44 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 96119f9 Initial import (#2187679)