$ git clone -n https://src.fedoraproject.org/rpms/rust-hashlink.git /var/lib/mock/f45-build-42297-792/root/chroot_tmpdir/scmroot/rust-hashlink
Cloning into '/var/lib/mock/f45-build-42297-792/root/chroot_tmpdir/scmroot/rust-hashlink'...
$ git fetch origin 4f1b7fd88dda4a8e7f720a69cc83bc430699b07b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-hashlink
 * [new ref]         4f1b7fd88dda4a8e7f720a69cc83bc430699b07b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4f1b7fd Update to version 0.12.2; Fixes RHBZ#2529415