$ git clone -n https://src.fedoraproject.org/rpms/obs-studio-plugin-webkitgtk.git /var/lib/mock/f38-build-side-42-init-devel-1233727-30640/root/chroot_tmpdir/scmroot/obs-studio-plugin-webkitgtk
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1233727-30640/root/chroot_tmpdir/scmroot/obs-studio-plugin-webkitgtk'...
$ git fetch origin 6b8d14230166f49422b67af48df67468d4c76964:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/obs-studio-plugin-webkitgtk
 * [new ref]         6b8d14230166f49422b67af48df67468d4c76964 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6b8d142 Initial import into Fedora