$ git clone -n https://src.fedoraproject.org/rpms/maven-antrun-plugin.git /var/lib/mock/f40-build-2254265-54224/root/chroot_tmpdir/scmroot/maven-antrun-plugin
Cloning into '/var/lib/mock/f40-build-2254265-54224/root/chroot_tmpdir/scmroot/maven-antrun-plugin'...
$ git fetch origin c181e2c1ca37b1b8be7f2185d256b975e2c71967:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/maven-antrun-plugin
 * [new ref]         c181e2c1ca37b1b8be7f2185d256b975e2c71967 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c181e2c Update javapackages test plan to f40