$ git clone -n https://src.fedoraproject.org/rpms/maven-script-interpreter.git /var/lib/mock/f41-build-772569-13506/root/chroot_tmpdir/scmroot/maven-script-interpreter
Cloning into '/var/lib/mock/f41-build-772569-13506/root/chroot_tmpdir/scmroot/maven-script-interpreter'...
$ git fetch origin 2372bc9e2bd39d9b6e93fc9b864ea27748f39f4a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/maven-script-interpreter
 * [new ref]         2372bc9e2bd39d9b6e93fc9b864ea27748f39f4a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2372bc9 Set maven javaVersion to 8, closes rhbz#2266675