$ git clone -n https://src.fedoraproject.org/rpms/junit5.git /var/lib/mock/f40-build-2535328-61850/root/chroot_tmpdir/scmroot/junit5
Cloning into '/var/lib/mock/f40-build-2535328-61850/root/chroot_tmpdir/scmroot/junit5'...
$ git fetch origin 81abc3af6fb6a52a160c1bbd10bf891b080f135b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/junit5
 * [new ref]         81abc3af6fb6a52a160c1bbd10bf891b080f135b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 81abc3a Rebuilt for java-21-openjdk as system jdk