$ git clone -n https://src.fedoraproject.org/rpms/shaderc.git /var/lib/mock/f41-build-846650-163162/root/chroot_tmpdir/scmroot/shaderc
Cloning into '/var/lib/mock/f41-build-846650-163162/root/chroot_tmpdir/scmroot/shaderc'...
$ git fetch origin 69ab0ca76317d2a94b6a6fa24239b282d4afc066:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/shaderc
 * [new ref]         69ab0ca76317d2a94b6a6fa24239b282d4afc066 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 69ab0ca Update to 1.3.290.0 SDK