$ git clone -n https://src.fedoraproject.org/rpms/plasma-camera.git /var/lib/mock/f42-build-862319-170742/root/chroot_tmpdir/scmroot/plasma-camera
Cloning into '/var/lib/mock/f42-build-862319-170742/root/chroot_tmpdir/scmroot/plasma-camera'...
$ git fetch origin 29ecfb331bfb29d65040db48d7b0f5adb353575f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-camera
 * [new ref]         29ecfb331bfb29d65040db48d7b0f5adb353575f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 29ecfb3 Initial Import (fedora#2292804)