$ git clone -n https://src.fedoraproject.org/rpms/plasma-browser-integration.git /var/lib/mock/f42-build-3530247-46318/root/chroot_tmpdir/scmroot/plasma-browser-integration
Cloning into '/var/lib/mock/f42-build-3530247-46318/root/chroot_tmpdir/scmroot/plasma-browser-integration'...
$ git fetch origin fdee7f90dfb5624e6080a8fc320c98f813ecab4c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-browser-integration
 * [new ref]         fdee7f90dfb5624e6080a8fc320c98f813ecab4c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fdee7f9 6.3.4