$ git clone -n https://src.fedoraproject.org/rpms/rust-thread-id.git /var/lib/mock/f40-build-2040095-48324/root/chroot_tmpdir/scmroot/rust-thread-id
Cloning into '/var/lib/mock/f40-build-2040095-48324/root/chroot_tmpdir/scmroot/rust-thread-id'...
$ git fetch origin 0a2dece9ee57b71efa819924b33f025a67085162:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-thread-id
 * [new ref]         0a2dece9ee57b71efa819924b33f025a67085162 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0a2dece Update to version 4.2.1; Fixes RHBZ#2244542