$ git clone -n https://src.fedoraproject.org/rpms/rust-if-addrs.git /var/lib/mock/f45-build-42509-794/root/chroot_tmpdir/scmroot/rust-if-addrs
Cloning into '/var/lib/mock/f45-build-42509-794/root/chroot_tmpdir/scmroot/rust-if-addrs'...
$ git fetch origin 3634d79feaa810edc692cc342487443fe270ecd3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-if-addrs
 * [new ref]         3634d79feaa810edc692cc342487443fe270ecd3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3634d79 Initial import into Fedora (#2512796)