$ git clone -n https://src.fedoraproject.org/rpms/rust-syntect.git /var/lib/mock/f39-build-1791516-41744/root/chroot_tmpdir/scmroot/rust-syntect
Cloning into '/var/lib/mock/f39-build-1791516-41744/root/chroot_tmpdir/scmroot/rust-syntect'...
$ git fetch origin d2eef814606663697c2d840ac2a13d2fe8366b1a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-syntect
 * [new ref]         d2eef814606663697c2d840ac2a13d2fe8366b1a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d2eef81 Update to version 5.1.0; Fixes RHBZ#2227879