$ git clone -n https://src.fedoraproject.org/rpms/rust-clap_derive.git /var/lib/mock/f38-build-side-42-init-devel-1130511-30311/root/chroot_tmpdir/scmroot/rust-clap_derive
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1130511-30311/root/chroot_tmpdir/scmroot/rust-clap_derive'...
$ git fetch origin 61f6c3f98d9b09aad4c636573217043f6b8c9b72:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-clap_derive
 * [new ref]         61f6c3f98d9b09aad4c636573217043f6b8c9b72 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 61f6c3f Update to version 4.3.12; Fixes RHBZ#2222988