$ git clone -n https://src.fedoraproject.org/rpms/rust-syslog.git /var/lib/mock/f45-build-45310-822/root/chroot_tmpdir/scmroot/rust-syslog
Cloning into '/var/lib/mock/f45-build-45310-822/root/chroot_tmpdir/scmroot/rust-syslog'...
$ git fetch origin 1279116ae111bd2a60c7291c046013a3e7bf1ed9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-syslog
 * [new ref]         1279116ae111bd2a60c7291c046013a3e7bf1ed9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1279116 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild