$ git clone -n https://src.fedoraproject.org/rpms/rust-clap_complete.git /var/lib/mock/f39-build-1470274-33887/root/chroot_tmpdir/scmroot/rust-clap_complete
Cloning into '/var/lib/mock/f39-build-1470274-33887/root/chroot_tmpdir/scmroot/rust-clap_complete'...
$ git fetch origin e6f17e40a9bdb126f80ced5e2d22abb50b3f5622:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-clap_complete
 * [new ref]         e6f17e40a9bdb126f80ced5e2d22abb50b3f5622 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e6f17e4 Update to version 4.4.3; Fixes RHBZ#2240688