$ git clone -n https://src.fedoraproject.org/rpms/modulemaker-maven-plugin.git /var/lib/mock/f42-build-3357764-45030/root/chroot_tmpdir/scmroot/modulemaker-maven-plugin
Cloning into '/var/lib/mock/f42-build-3357764-45030/root/chroot_tmpdir/scmroot/modulemaker-maven-plugin'...
$ git fetch origin 8ed525c8308450f54062b7d7b4213cacca3b9df2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/modulemaker-maven-plugin
 * [new ref]         8ed525c8308450f54062b7d7b4213cacca3b9df2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8ed525c Remove javadoc subpackage