$ git clone -n https://src.fedoraproject.org/rpms/rust-ptr_meta0.1.git /var/lib/mock/f45-build-44097-810/root/chroot_tmpdir/scmroot/rust-ptr_meta0.1
Cloning into '/var/lib/mock/f45-build-44097-810/root/chroot_tmpdir/scmroot/rust-ptr_meta0.1'...
$ git fetch origin 840d1b626bf8ebcfaae3bc49185152a79c23dfd0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-ptr_meta0.1
 * [new ref]         840d1b626bf8ebcfaae3bc49185152a79c23dfd0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 840d1b6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild