$ git clone -n https://src.fedoraproject.org/rpms/rust-wayland-backend.git /var/lib/mock/f45-build-46142-831/root/chroot_tmpdir/scmroot/rust-wayland-backend
Cloning into '/var/lib/mock/f45-build-46142-831/root/chroot_tmpdir/scmroot/rust-wayland-backend'...
$ git fetch origin a920d02bca4a0e316df2c89e9c5f3a556d755c99:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-wayland-backend
 * [new ref]         a920d02bca4a0e316df2c89e9c5f3a556d755c99 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a920d02 Update to version 0.3.17; Fixes RHBZ#2506293