$ git clone -n https://src.fedoraproject.org/rpms/rust-clap_builder.git /var/lib/mock/f39-build-2192248-51467/root/chroot_tmpdir/scmroot/rust-clap_builder
Cloning into '/var/lib/mock/f39-build-2192248-51467/root/chroot_tmpdir/scmroot/rust-clap_builder'...
$ git fetch origin fbbe744c8e585270f6f36f3f0e9b3d4e11c5fb53:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-clap_builder
 * [new ref]         fbbe744c8e585270f6f36f3f0e9b3d4e11c5fb53 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fbbe744 Update to version 4.4.12; Fixes RHBZ#2256122