$ git clone -n https://src.fedoraproject.org/rpms/srcpd.git /var/lib/mock/f40-build-794856-139796/root/chroot_tmpdir/scmroot/srcpd
Cloning into '/var/lib/mock/f40-build-794856-139796/root/chroot_tmpdir/scmroot/srcpd'...
$ git fetch origin 117d6b0ccd68abef6d709f7b8412fa900f1eefd4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/srcpd
 * [new ref]         117d6b0ccd68abef6d709f7b8412fa900f1eefd4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 117d6b0 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild