$ git clone -n https://src.fedoraproject.org/rpms/jreen.git /var/lib/mock/f39-build-1689577-41132/root/chroot_tmpdir/scmroot/jreen
Cloning into '/var/lib/mock/f39-build-1689577-41132/root/chroot_tmpdir/scmroot/jreen'...
$ git fetch origin 145214b34b186e8e454b87e7102c343d8805ca18:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jreen
 * [new ref]         145214b34b186e8e454b87e7102c343d8805ca18 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 145214b Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild