$ git clone -n https://src.fedoraproject.org/rpms/rust-gix-diff.git /var/lib/mock/f38-build-side-43-rust-devel-1418867-31459/root/chroot_tmpdir/scmroot/rust-gix-diff
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1418867-31459/root/chroot_tmpdir/scmroot/rust-gix-diff'...
$ git fetch origin 72c3e86826542362c98e9c0f657a88ef3c4be14d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gix-diff
 * [new ref]         72c3e86826542362c98e9c0f657a88ef3c4be14d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 72c3e86 Update to version 0.37.0