$ git clone -n https://src.fedoraproject.org/rpms/mingw-qt6-qtbase.git /var/lib/mock/f40-build-1795627-24871/root/chroot_tmpdir/scmroot/mingw-qt6-qtbase
Cloning into '/var/lib/mock/f40-build-1795627-24871/root/chroot_tmpdir/scmroot/mingw-qt6-qtbase'...
$ git fetch origin b2c89b8e4a13d405cface5dd70143aebff251b57:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mingw-qt6-qtbase
 * [new ref]         b2c89b8e4a13d405cface5dd70143aebff251b57 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b2c89b8 Bump release