$ git clone -n https://src.fedoraproject.org/rpms/rust-gst-plugin-gtk4.git /var/lib/mock/f42-build-side-1-3587753-46935/root/chroot_tmpdir/scmroot/rust-gst-plugin-gtk4
Cloning into '/var/lib/mock/f42-build-side-1-3587753-46935/root/chroot_tmpdir/scmroot/rust-gst-plugin-gtk4'...
$ git fetch origin c8ddfbedd84154b049af798b7613cf679c2da41d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gst-plugin-gtk4
 * [new ref]         c8ddfbedd84154b049af798b7613cf679c2da41d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c8ddfbe Update to version 0.13.6; Fixes RHBZ#2365970