$ git clone -n https://src.fedoraproject.org/rpms/rust-noop_proc_macro.git /var/lib/mock/f45-build-43431-803/root/chroot_tmpdir/scmroot/rust-noop_proc_macro
Cloning into '/var/lib/mock/f45-build-43431-803/root/chroot_tmpdir/scmroot/rust-noop_proc_macro'...
$ git fetch origin 531310a1bd1bfc2e4b523882dbb7252617cd99cf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-noop_proc_macro
 * [new ref]         531310a1bd1bfc2e4b523882dbb7252617cd99cf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 531310a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild