$ git clone -n https://src.fedoraproject.org/rpms/rust-gstreamer-pbutils.git /var/lib/mock/f40-build-2655819-66912/root/chroot_tmpdir/scmroot/rust-gstreamer-pbutils
Cloning into '/var/lib/mock/f40-build-2655819-66912/root/chroot_tmpdir/scmroot/rust-gstreamer-pbutils'...
$ git fetch origin 26aa5e5c7c1bb6849b3f4f4cfdbb725202851b8d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gstreamer-pbutils
 * [new ref]         26aa5e5c7c1bb6849b3f4f4cfdbb725202851b8d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 26aa5e5 Update to version 0.22.0; Fixes RHBZ#2263362