$ git clone -n https://src.fedoraproject.org/rpms/rust-cargo-config2.git /var/lib/mock/f38-build-side-43-rust-devel-1403209-31195/root/chroot_tmpdir/scmroot/rust-cargo-config2
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1403209-31195/root/chroot_tmpdir/scmroot/rust-cargo-config2'...
$ git fetch origin 7d9c417630b032bd33dffea264a640cb309a0889:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cargo-config2
 * [new ref]         7d9c417630b032bd33dffea264a640cb309a0889 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7d9c417 Update to version 0.1.12; Fixes RHBZ#2238965