$ git clone -n https://src.fedoraproject.org/rpms/rust-gtk4-sys.git /var/lib/mock/f41-build-side-1-2769898-32133/root/chroot_tmpdir/scmroot/rust-gtk4-sys
Cloning into '/var/lib/mock/f41-build-side-1-2769898-32133/root/chroot_tmpdir/scmroot/rust-gtk4-sys'...
$ git fetch origin f00b42c4fca00081acbb0ff01f01129fc4e065de:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gtk4-sys
 * [new ref]         f00b42c4fca00081acbb0ff01f01129fc4e065de -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f00b42c Update to version 0.9.0; Fixes RHBZ#2297145