$ git clone -n https://src.fedoraproject.org/rpms/gappalib-coq.git /var/lib/mock/f39-build-1587417-38222/root/chroot_tmpdir/scmroot/gappalib-coq
Cloning into '/var/lib/mock/f39-build-1587417-38222/root/chroot_tmpdir/scmroot/gappalib-coq'...
$ git fetch origin 9c36b1dc9b42fb0bfaba7907344e0bdbeaae658d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gappalib-coq
 * [new ref]         9c36b1dc9b42fb0bfaba7907344e0bdbeaae658d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9c36b1d Rebuild for ocaml-zarith 1.13