$ git clone -n https://src.fedoraproject.org/rpms/rust-time-macros.git /var/lib/mock/f39-build-2210330-52179/root/chroot_tmpdir/scmroot/rust-time-macros
Cloning into '/var/lib/mock/f39-build-2210330-52179/root/chroot_tmpdir/scmroot/rust-time-macros'...
$ git fetch origin 580fe2f8c6205f9af372e97e493b64359c6aef73:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-time-macros
 * [new ref]         580fe2f8c6205f9af372e97e493b64359c6aef73 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 580fe2f Update to version 0.2.16; Fixes RHBZ#2255216