$ git clone -n https://src.fedoraproject.org/rpms/rust-async_http_range_reader.git /var/lib/mock/f42-build-3252993-41225/root/chroot_tmpdir/scmroot/rust-async_http_range_reader
Cloning into '/var/lib/mock/f42-build-3252993-41225/root/chroot_tmpdir/scmroot/rust-async_http_range_reader'...
$ git fetch origin abd151800db56d82ed2a23a885f97528cfc80000:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-async_http_range_reader
 * [new ref]         abd151800db56d82ed2a23a885f97528cfc80000 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at abd1518 Improve a regex in the .rpmlintrc file