$ git clone -n https://src.fedoraproject.org/rpms/rust-termcolor.git /var/lib/mock/f39-build-1455668-32918/root/chroot_tmpdir/scmroot/rust-termcolor
Cloning into '/var/lib/mock/f39-build-1455668-32918/root/chroot_tmpdir/scmroot/rust-termcolor'...
$ git fetch origin 4e75f2c4c585204c3ab408618211aae5c0137298:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-termcolor
 * [new ref]         4e75f2c4c585204c3ab408618211aae5c0137298 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4e75f2c Update to version 1.3.0; Fixes RHBZ#2239554