$ git clone -n https://src.fedoraproject.org/rpms/rust-pkcs1.git /var/lib/mock/f39-build-1499955-34779/root/chroot_tmpdir/scmroot/rust-pkcs1
Cloning into '/var/lib/mock/f39-build-1499955-34779/root/chroot_tmpdir/scmroot/rust-pkcs1'...
$ git fetch origin 407c9e4a43ff1ecd2f3117ba4dc7b395b57cf226:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pkcs1
 * [new ref]         407c9e4a43ff1ecd2f3117ba4dc7b395b57cf226 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 407c9e4 Regenerate with rust2rpm v24