$ git clone -n https://src.fedoraproject.org/rpms/rust-winit.git /var/lib/mock/f39-build-1500279-34786/root/chroot_tmpdir/scmroot/rust-winit
Cloning into '/var/lib/mock/f39-build-1500279-34786/root/chroot_tmpdir/scmroot/rust-winit'...
$ git fetch origin 8e806b59ba38ade59a46a7919cac231be911c1f1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-winit
 * [new ref]         8e806b59ba38ade59a46a7919cac231be911c1f1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8e806b5 Update to 0.28.7