$ git clone -n https://src.fedoraproject.org/rpms/jol.git /var/lib/mock/f38-build-side-42-init-devel-599585-26165/root/chroot_tmpdir/scmroot/jol
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-599585-26165/root/chroot_tmpdir/scmroot/jol'...
$ git fetch origin 2a6d4a627d51ac6154859505f5cc05e231c42dce:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jol
 * [new ref]         2a6d4a627d51ac6154859505f5cc05e231c42dce -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2a6d4a6 Version 0.17.  Generate javadocs.