$ git clone -n https://src.fedoraproject.org/rpms/obs-studio-plugin-vaapi.git /var/lib/mock/f45-build-20434-570/root/chroot_tmpdir/scmroot/obs-studio-plugin-vaapi
Cloning into '/var/lib/mock/f45-build-20434-570/root/chroot_tmpdir/scmroot/obs-studio-plugin-vaapi'...
$ git fetch origin 6a1c5bbed4c999ac88b5a7406de09886738a0f36:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/obs-studio-plugin-vaapi
 * [new ref]         6a1c5bbed4c999ac88b5a7406de09886738a0f36 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6a1c5bb Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild