$ git clone -n https://src.fedoraproject.org/rpms/libwebp.git /var/lib/mock/f40-build-785785-134119/root/chroot_tmpdir/scmroot/libwebp
Cloning into '/var/lib/mock/f40-build-785785-134119/root/chroot_tmpdir/scmroot/libwebp'...
$ git fetch origin 667ecd6ee99be0f7a88d97ab34669ef4bafcd81a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libwebp
 * [new ref]         667ecd6ee99be0f7a88d97ab34669ef4bafcd81a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 667ecd6 Migrated to SPDX license