$ git clone -n https://src.fedoraproject.org/rpms/koko.git /var/lib/mock/f40-build-2424424-60595/root/chroot_tmpdir/scmroot/koko
Cloning into '/var/lib/mock/f40-build-2424424-60595/root/chroot_tmpdir/scmroot/koko'...
$ git fetch origin a34e7a50dc6c031f2fa6a27e27a032bdb491c1f4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/koko
 * [new ref]         a34e7a50dc6c031f2fa6a27e27a032bdb491c1f4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a34e7a5 Rebuild (qt6)