$ git clone -n https://src.fedoraproject.org/rpms/qt6-qtserialbus.git /var/lib/mock/f40-build-2419018-60580/root/chroot_tmpdir/scmroot/qt6-qtserialbus
Cloning into '/var/lib/mock/f40-build-2419018-60580/root/chroot_tmpdir/scmroot/qt6-qtserialbus'...
$ git fetch origin fb7a60324809ddec8e8d4ace307e6288c38a96f1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qtserialbus
 * [new ref]         fb7a60324809ddec8e8d4ace307e6288c38a96f1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fb7a603 Examples: also install source files