$ git clone -n https://src.fedoraproject.org/rpms/rust-rust-netrc.git /var/lib/mock/f45-build-44578-815/root/chroot_tmpdir/scmroot/rust-rust-netrc
Cloning into '/var/lib/mock/f45-build-44578-815/root/chroot_tmpdir/scmroot/rust-rust-netrc'...
$ git fetch origin cda6161529193664818ac8c289f520f5addccbf9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rust-netrc
 * [new ref]         cda6161529193664818ac8c289f520f5addccbf9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cda6161 Simplify .gitignore