$ git clone -n https://src.fedoraproject.org/rpms/gstreamer1-vaapi.git /var/lib/mock/f41-build-861178-169439/root/chroot_tmpdir/scmroot/gstreamer1-vaapi
Cloning into '/var/lib/mock/f41-build-861178-169439/root/chroot_tmpdir/scmroot/gstreamer1-vaapi'...
$ git fetch origin 7dc9c8bf5275cbbd4f5047c71fc78c5816e91187:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gstreamer1-vaapi
 * [new ref]         7dc9c8bf5275cbbd4f5047c71fc78c5816e91187 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7dc9c8b 1.24.9