$ git clone -n https://src.fedoraproject.org/rpms/rust-clap.git /var/lib/mock/f40-build-2035370-47960/root/chroot_tmpdir/scmroot/rust-clap
Cloning into '/var/lib/mock/f40-build-2035370-47960/root/chroot_tmpdir/scmroot/rust-clap'...
$ git fetch origin fc6f10b75d8d2c27aaae9c12b241581bf5900f50:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-clap
 * [new ref]         fc6f10b75d8d2c27aaae9c12b241581bf5900f50 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fc6f10b Update to version 4.4.10; Fixes RHBZ#2249160