$ git clone -n https://src.fedoraproject.org/rpms/rust-human_format.git /var/lib/mock/f38-build-side-42-init-devel-1396290-31050/root/chroot_tmpdir/scmroot/rust-human_format
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1396290-31050/root/chroot_tmpdir/scmroot/rust-human_format'...
$ git fetch origin 5d53b4efdae030ab6f2c9c2b0cce6d4d478014e6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-human_format
 * [new ref]         5d53b4efdae030ab6f2c9c2b0cce6d4d478014e6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5d53b4e Initial package (rhbz#2224327)