$ git clone -n https://src.fedoraproject.org/rpms/gst.git /var/lib/mock/f40-build-2209845-52168/root/chroot_tmpdir/scmroot/gst
Cloning into '/var/lib/mock/f40-build-2209845-52168/root/chroot_tmpdir/scmroot/gst'...
$ git fetch origin e566721b49a73a1f20955ba759664375116a17c9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gst
 * [new ref]         e566721b49a73a1f20955ba759664375116a17c9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e566721 build: Try to lower upstream req ver for modules