$ git clone -n https://src.fedoraproject.org/rpms/rust-gtk4.git /var/lib/mock/f38-build-side-43-rust-devel-1405758-31258/root/chroot_tmpdir/scmroot/rust-gtk4
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1405758-31258/root/chroot_tmpdir/scmroot/rust-gtk4'...
$ git fetch origin 2032223d412ba11c6fe9a070c70cc0c49a779ed3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gtk4
 * [new ref]         2032223d412ba11c6fe9a070c70cc0c49a779ed3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2032223 Update to version 0.7.3; Fixes RHBZ#2240345