$ git clone -n https://src.fedoraproject.org/rpms/rust-enumflags2_0.6.git /var/lib/mock/f41-build-side-1-2757825-31470/root/chroot_tmpdir/scmroot/rust-enumflags2_0.6
Cloning into '/var/lib/mock/f41-build-side-1-2757825-31470/root/chroot_tmpdir/scmroot/rust-enumflags2_0.6'...
$ git fetch origin c820c7f19c247d17836d6b54a3c1e93275ad8748:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-enumflags2_0.6
 * [new ref]         c820c7f19c247d17836d6b54a3c1e93275ad8748 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c820c7f Remove reference to readme file that is not included in published crates