$ git clone -n https://src.fedoraproject.org/rpms/ghc-js-jquery.git /var/lib/mock/f38-build-side-42-init-devel-605471-26248/root/chroot_tmpdir/scmroot/ghc-js-jquery
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-605471-26248/root/chroot_tmpdir/scmroot/ghc-js-jquery'...
$ git fetch origin 6054ab4cf46dff5550816c468f41146cfd3a86c9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-js-jquery
 * [new ref]         6054ab4cf46dff5550816c468f41146cfd3a86c9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6054ab4 set %autorelease baserelease for upgrade from f37