$ git clone -n https://src.fedoraproject.org/rpms/rust-jsonwebtoken.git /var/lib/mock/f45-build-42783-796/root/chroot_tmpdir/scmroot/rust-jsonwebtoken
Cloning into '/var/lib/mock/f45-build-42783-796/root/chroot_tmpdir/scmroot/rust-jsonwebtoken'...
$ git fetch origin 993857507ff8c9a3d2b1c357f53419872cc0fba4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-jsonwebtoken
 * [new ref]         993857507ff8c9a3d2b1c357f53419872cc0fba4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9938575 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild