$ git clone -n https://src.fedoraproject.org/rpms/jgit.git /var/lib/mock/f38-build-side-42-init-devel-590162-26120/root/chroot_tmpdir/scmroot/jgit
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-590162-26120/root/chroot_tmpdir/scmroot/jgit'...
$ git fetch origin 7258910c5e98f2fc91e06eca78da81f3449f5338:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jgit
 * [new ref]         7258910c5e98f2fc91e06eca78da81f3449f5338 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7258910 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild