$ git clone -n https://src.fedoraproject.org/rpms/rust-dtor-proc-macro.git /var/lib/mock/f45-build-41386-782/root/chroot_tmpdir/scmroot/rust-dtor-proc-macro
Cloning into '/var/lib/mock/f45-build-41386-782/root/chroot_tmpdir/scmroot/rust-dtor-proc-macro'...
$ git fetch origin 43d6eefb12ff94de57ccc79ee18ce07ffccd9718:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-dtor-proc-macro
 * [new ref]         43d6eefb12ff94de57ccc79ee18ce07ffccd9718 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 43d6eef Update to version 0.0.13; Resolves RHBZ#2456348