$ git clone -n https://src.fedoraproject.org/rpms/gnome-flashback.git /var/lib/mock/f38-build-711914-94068/root/chroot_tmpdir/scmroot/gnome-flashback
Cloning into '/var/lib/mock/f38-build-711914-94068/root/chroot_tmpdir/scmroot/gnome-flashback'...
$ git fetch origin 43cae7fc2b1c8a7586137a2a86f3a78c8ec47e01:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-flashback
 * [new ref]         43cae7fc2b1c8a7586137a2a86f3a78c8ec47e01 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 43cae7f Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild