$ git clone -n https://src.fedoraproject.org/rpms/jack_capture.git /var/lib/mock/f39-build-1891871-42797/root/chroot_tmpdir/scmroot/jack_capture
Cloning into '/var/lib/mock/f39-build-1891871-42797/root/chroot_tmpdir/scmroot/jack_capture'...
$ git fetch origin 773337a55a03717cad5cb798dac92ea284975f30:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jack_capture
 * [new ref]         773337a55a03717cad5cb798dac92ea284975f30 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 773337a Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild