$ git clone -n https://src.fedoraproject.org/rpms/rust-webpki-roots.git /var/lib/mock/f45-build-46174-831/root/chroot_tmpdir/scmroot/rust-webpki-roots
Cloning into '/var/lib/mock/f45-build-46174-831/root/chroot_tmpdir/scmroot/rust-webpki-roots'...
$ git fetch origin 5c180d2d00e3981a116e81571ce973c6ec17b988:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-webpki-roots
 * [new ref]         5c180d2d00e3981a116e81571ce973c6ec17b988 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5c180d2 Update to version 1.0.9; Fixes RHBZ#2502017