$ git clone -n https://src.fedoraproject.org/rpms/maven-remote-resources-plugin.git /var/lib/mock/f42-build-3421857-45166/root/chroot_tmpdir/scmroot/maven-remote-resources-plugin
Cloning into '/var/lib/mock/f42-build-3421857-45166/root/chroot_tmpdir/scmroot/maven-remote-resources-plugin'...
$ git fetch origin 7b002830ade6f4af88c5835c1d839259eac825f8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/maven-remote-resources-plugin
 * [new ref]         7b002830ade6f4af88c5835c1d839259eac825f8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7b00283 Remove javadoc subpackage