$ git clone -n https://src.fedoraproject.org/rpms/rust-zlink.git /var/lib/mock/f45-build-46348-833/root/chroot_tmpdir/scmroot/rust-zlink
Cloning into '/var/lib/mock/f45-build-46348-833/root/chroot_tmpdir/scmroot/rust-zlink'...
$ git fetch origin 41f8f5ec2cf6503c0d002b8b1d378e4af9300a7b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-zlink
 * [new ref]         41f8f5ec2cf6503c0d002b8b1d378e4af9300a7b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 41f8f5e Do not run doc tests