$ git clone -n https://src.fedoraproject.org/rpms/cdi-api.git /var/lib/mock/f40-build-2047311-48954/root/chroot_tmpdir/scmroot/cdi-api
Cloning into '/var/lib/mock/f40-build-2047311-48954/root/chroot_tmpdir/scmroot/cdi-api'...
$ git fetch origin 2a76fe5e97fb2d4d7890611b956a5b139606b862:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cdi-api
 * [new ref]         2a76fe5e97fb2d4d7890611b956a5b139606b862 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2a76fe5 Get rid of module_prefix macro