$ git clone -n https://src.fedoraproject.org/rpms/xfce4-calculator-plugin.git /var/lib/mock/f38-build-side-42-init-devel-823627-28355/root/chroot_tmpdir/scmroot/xfce4-calculator-plugin
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-823627-28355/root/chroot_tmpdir/scmroot/xfce4-calculator-plugin'...
$ git fetch origin 2af8f8991b58d3aad236c65b7a3a26979ffe7e64:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xfce4-calculator-plugin
 * [new ref]         2af8f8991b58d3aad236c65b7a3a26979ffe7e64 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2af8f89 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild