$ git clone -n https://src.fedoraproject.org/rpms/rust-compose_spec.git /var/lib/mock/f41-build-side-1-2991731-36005/root/chroot_tmpdir/scmroot/rust-compose_spec
Cloning into '/var/lib/mock/f41-build-side-1-2991731-36005/root/chroot_tmpdir/scmroot/rust-compose_spec'...
$ git fetch origin 01fabaf37759cda745eca9961b0ab654c0ce93a3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-compose_spec
 * [new ref]         01fabaf37759cda745eca9961b0ab654c0ce93a3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 01fabaf Initial import (#2310717)