$ git clone -n https://src.fedoraproject.org/rpms/rust-phf_macros.git /var/lib/mock/f40-build-2038588-48193/root/chroot_tmpdir/scmroot/rust-phf_macros
Cloning into '/var/lib/mock/f40-build-2038588-48193/root/chroot_tmpdir/scmroot/rust-phf_macros'...
$ git fetch origin f3cd9c79d85ce29420afb06e800466a16915a25d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-phf_macros
 * [new ref]         f3cd9c79d85ce29420afb06e800466a16915a25d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f3cd9c7 Update to version 0.11.2; Fixes RHBZ#2107771