$ git clone -n https://src.fedoraproject.org/rpms/golang-github-eclipse-paho-mqtt.git /var/lib/mock/f39-build-1504756-35070/root/chroot_tmpdir/scmroot/golang-github-eclipse-paho-mqtt
Cloning into '/var/lib/mock/f39-build-1504756-35070/root/chroot_tmpdir/scmroot/golang-github-eclipse-paho-mqtt'...
$ git fetch origin 6561482af541f58453e9e1f0436aa5380849cb70:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-eclipse-paho-mqtt
 * [new ref]         6561482af541f58453e9e1f0436aa5380849cb70 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6561482 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild