$ git clone -n https://src.fedoraproject.org/rpms/rust-hashlink.git /var/lib/mock/f39-build-1581450-38087/root/chroot_tmpdir/scmroot/rust-hashlink
Cloning into '/var/lib/mock/f39-build-1581450-38087/root/chroot_tmpdir/scmroot/rust-hashlink'...
$ git fetch origin 882ccd367667d98eb2f63ff3f5e4eea1e7404149:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-hashlink
 * [new ref]         882ccd367667d98eb2f63ff3f5e4eea1e7404149 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 882ccd3 Update to version 0.8.4; Fixes RHBZ#2235469