$ git clone -n https://src.fedoraproject.org/rpms/qt5-qtimageformats.git /var/lib/mock/f40-build-2052888-49087/root/chroot_tmpdir/scmroot/qt5-qtimageformats
Cloning into '/var/lib/mock/f40-build-2052888-49087/root/chroot_tmpdir/scmroot/qt5-qtimageformats'...
$ git fetch origin 50334768bb4a4814a89be546e22fbc32a5333b56:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt5-qtimageformats
 * [new ref]         50334768bb4a4814a89be546e22fbc32a5333b56 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5033476 Rebuild for jasper 4.1