$ git clone -n https://src.fedoraproject.org/rpms/rust-cargo-options.git /var/lib/mock/f39-build-2045475-48720/root/chroot_tmpdir/scmroot/rust-cargo-options
Cloning into '/var/lib/mock/f39-build-2045475-48720/root/chroot_tmpdir/scmroot/rust-cargo-options'...
$ git fetch origin 61d932ed37421a49df295ebf0386abbdf2ab7cbb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-cargo-options
 * [new ref]         61d932ed37421a49df295ebf0386abbdf2ab7cbb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 61d932e Update to version 0.7.2; FixesRHBZ#2250875