$ git clone -n https://src.fedoraproject.org/rpms/classpathless-compiler.git /var/lib/mock/f40-build-2250932-54096/root/chroot_tmpdir/scmroot/classpathless-compiler
Cloning into '/var/lib/mock/f40-build-2250932-54096/root/chroot_tmpdir/scmroot/classpathless-compiler'...
$ git fetch origin 651f0c1244801373107dc92fd125c661a80e1d57:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/classpathless-compiler
 * [new ref]         651f0c1244801373107dc92fd125c661a80e1d57 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 651f0c1 Add generic JPV tests