$ git clone -n https://src.fedoraproject.org/rpms/qt5-qtwebchannel.git /var/lib/mock/f41-build-811758-147521/root/chroot_tmpdir/scmroot/qt5-qtwebchannel
Cloning into '/var/lib/mock/f41-build-811758-147521/root/chroot_tmpdir/scmroot/qt5-qtwebchannel'...
$ git fetch origin ea715123bc9f8bc088bbcdbf3678fc5a89eb86ba:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt5-qtwebchannel
 * [new ref]         ea715123bc9f8bc088bbcdbf3678fc5a89eb86ba -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ea71512 5.15.14