$ git clone -n https://src.fedoraproject.org/rpms/rust-proptest-macro.git /var/lib/mock/f45-build-44076-810/root/chroot_tmpdir/scmroot/rust-proptest-macro
Cloning into '/var/lib/mock/f45-build-44076-810/root/chroot_tmpdir/scmroot/rust-proptest-macro'...
$ git fetch origin d335695640ece9028894c8345c55d8b84f1bae54:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-proptest-macro
 * [new ref]         d335695640ece9028894c8345c55d8b84f1bae54 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d335695 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild