$ git clone -n https://src.fedoraproject.org/rpms/rust-gtk4-sys.git /var/lib/mock/f38-build-side-43-rust-devel-1399485-31134/root/chroot_tmpdir/scmroot/rust-gtk4-sys
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1399485-31134/root/chroot_tmpdir/scmroot/rust-gtk4-sys'...
$ git fetch origin c51cbd22e284b22e8d4378a590e399c2144916ef:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gtk4-sys
 * [new ref]         c51cbd22e284b22e8d4378a590e399c2144916ef -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c51cbd2 Update to version 0.7.3; Fixes RHBZ#2240347