$ git clone -n https://src.fedoraproject.org/rpms/rust-zincati.git /var/lib/mock/f42-build-875528-179304/root/chroot_tmpdir/scmroot/rust-zincati
Cloning into '/var/lib/mock/f42-build-875528-179304/root/chroot_tmpdir/scmroot/rust-zincati'...
$ git fetch origin aaa473e4363b7367ad79b00a0b52d0369445011c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-zincati
 * [new ref]         aaa473e4363b7367ad79b00a0b52d0369445011c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aaa473e Update to 0.0.29 upstream release