$ git clone -n https://src.fedoraproject.org/rpms/rust-libheif-rs.git /var/lib/mock/f40-build-2163475-50964/root/chroot_tmpdir/scmroot/rust-libheif-rs
Cloning into '/var/lib/mock/f40-build-2163475-50964/root/chroot_tmpdir/scmroot/rust-libheif-rs'...
$ git fetch origin 00d28f2eeae1c41e394d13ac38cea6c17b5c84b6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-libheif-rs
 * [new ref]         00d28f2eeae1c41e394d13ac38cea6c17b5c84b6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 00d28f2 Don't include the test data in the package