$ git clone -n https://src.fedoraproject.org/rpms/qt6-qtshadertools.git /var/lib/mock/f42-build-side-1-3539467-46565/root/chroot_tmpdir/scmroot/qt6-qtshadertools
Cloning into '/var/lib/mock/f42-build-side-1-3539467-46565/root/chroot_tmpdir/scmroot/qt6-qtshadertools'...
$ git fetch origin 9c23d429d1f06ca42a5bd8e580ec9bab43639a07:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt6-qtshadertools
 * [new ref]         9c23d429d1f06ca42a5bd8e580ec9bab43639a07 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9c23d42 6.9.1