$ git clone -n https://src.fedoraproject.org/rpms/rust-unic-langid.git /var/lib/mock/f38-build-side-42-init-devel-1396134-31050/root/chroot_tmpdir/scmroot/rust-unic-langid
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1396134-31050/root/chroot_tmpdir/scmroot/rust-unic-langid'...
$ git fetch origin fd183c7ba33a68652f9e9263f70ced357bc8e268:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-unic-langid
 * [new ref]         fd183c7ba33a68652f9e9263f70ced357bc8e268 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fd183c7 Update to version 0.9.1; Fixes RHBZ#2136325