$ git clone -n https://src.fedoraproject.org/rpms/junit5.git /var/lib/mock/f40-build-2410578-60560/root/chroot_tmpdir/scmroot/junit5
Cloning into '/var/lib/mock/f40-build-2410578-60560/root/chroot_tmpdir/scmroot/junit5'...
$ git fetch origin 7cb52e3fca422567fc435a6ade0f970aa232ac55:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/junit5
 * [new ref]         7cb52e3fca422567fc435a6ade0f970aa232ac55 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7cb52e3 Update to upstream version 5.10.2