$ git clone -n https://src.fedoraproject.org/rpms/kf5-prison.git /var/lib/mock/f40-build-786850-134632/root/chroot_tmpdir/scmroot/kf5-prison
Cloning into '/var/lib/mock/f40-build-786850-134632/root/chroot_tmpdir/scmroot/kf5-prison'...
$ git fetch origin 0ecb03361f8f707ef325a5371cc68bda8e0899f5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-prison
 * [new ref]         0ecb03361f8f707ef325a5371cc68bda8e0899f5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0ecb033 5.115.0