$ git clone -n https://src.fedoraproject.org/rpms/rust-der-parser.git /var/lib/mock/f45-build-41233-780/root/chroot_tmpdir/scmroot/rust-der-parser
Cloning into '/var/lib/mock/f45-build-41233-780/root/chroot_tmpdir/scmroot/rust-der-parser'...
$ git fetch origin 85cdb25fda1482d45ea3b15f1ba22893ef04b23c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-der-parser
 * [new ref]         85cdb25fda1482d45ea3b15f1ba22893ef04b23c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 85cdb25 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild