$ git clone -n https://src.fedoraproject.org/rpms/rust-is-terminal.git /var/lib/mock/f38-build-side-42-init-devel-1009281-29381/root/chroot_tmpdir/scmroot/rust-is-terminal
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1009281-29381/root/chroot_tmpdir/scmroot/rust-is-terminal'...
$ git fetch origin b8172cd565acccefc5ac219383d17df51b272f25:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-is-terminal
 * [new ref]         b8172cd565acccefc5ac219383d17df51b272f25 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b8172cd Update to version 0.4.7; Fixes RHBZ#2182618