$ git clone -n https://src.fedoraproject.org/rpms/rust-parsec-client.git /var/lib/mock/f39-build-1564400-37504/root/chroot_tmpdir/scmroot/rust-parsec-client
Cloning into '/var/lib/mock/f39-build-1564400-37504/root/chroot_tmpdir/scmroot/rust-parsec-client'...
$ git fetch origin 3e0321ce9def43ec2cf01c311d53f1528206b0e3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-parsec-client
 * [new ref]         3e0321ce9def43ec2cf01c311d53f1528206b0e3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3e0321c Update to 0.15.0