$ git clone -n https://src.fedoraproject.org/rpms/rust-docopt.git /var/lib/mock/f40-build-2224372-52780/root/chroot_tmpdir/scmroot/rust-docopt
Cloning into '/var/lib/mock/f40-build-2224372-52780/root/chroot_tmpdir/scmroot/rust-docopt'...
$ git fetch origin 710c6dc54aa2793f59601d1ea8cd0c7915bfa22f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-docopt
 * [new ref]         710c6dc54aa2793f59601d1ea8cd0c7915bfa22f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 710c6dc Fix typo in license tag