$ git clone -n https://src.fedoraproject.org/rpms/rust-as-raw-xcb-connection.git /var/lib/mock/f45-build-40181-769/root/chroot_tmpdir/scmroot/rust-as-raw-xcb-connection
Cloning into '/var/lib/mock/f45-build-40181-769/root/chroot_tmpdir/scmroot/rust-as-raw-xcb-connection'...
$ git fetch origin 837968a1581275bc88ff7e65c85000f7c5c50a4b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-as-raw-xcb-connection
 * [new ref]         837968a1581275bc88ff7e65c85000f7c5c50a4b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 837968a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild