$ git clone -n https://src.fedoraproject.org/rpms/maven-script-interpreter.git /var/lib/mock/f40-build-2721446-73080/root/chroot_tmpdir/scmroot/maven-script-interpreter
Cloning into '/var/lib/mock/f40-build-2721446-73080/root/chroot_tmpdir/scmroot/maven-script-interpreter'...
$ git fetch origin 63d6bbc8343a09e4316ca41d2cd46269e2bf09da:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/maven-script-interpreter
 * [new ref]         63d6bbc8343a09e4316ca41d2cd46269e2bf09da -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 63d6bbc Set maven javaVersion to 8.