$ git clone -n https://src.fedoraproject.org/rpms/jFormatString.git /var/lib/mock/f39-build-1494815-34543/root/chroot_tmpdir/scmroot/jFormatString
Cloning into '/var/lib/mock/f39-build-1494815-34543/root/chroot_tmpdir/scmroot/jFormatString'...
$ git fetch origin 4fd5d3a37b2e1f65457db90c571d3fa12705e81d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jFormatString
 * [new ref]         4fd5d3a37b2e1f65457db90c571d3fa12705e81d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4fd5d3a Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild