$ git clone -n https://src.fedoraproject.org/rpms/rust-ttf-parser.git /var/lib/mock/f38-build-side-43-rust-devel-1410139-31413/root/chroot_tmpdir/scmroot/rust-ttf-parser
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1410139-31413/root/chroot_tmpdir/scmroot/rust-ttf-parser'...
$ git fetch origin 5becdedfca9112569a036eeccd7fb6fd157b3141:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-ttf-parser
 * [new ref]         5becdedfca9112569a036eeccd7fb6fd157b3141 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5becded Update to 0.18.1