$ git clone -n https://src.fedoraproject.org/rpms/golang-github-boombuler-barcode.git /var/lib/mock/f45-build-11771-434/root/chroot_tmpdir/scmroot/golang-github-boombuler-barcode
Cloning into '/var/lib/mock/f45-build-11771-434/root/chroot_tmpdir/scmroot/golang-github-boombuler-barcode'...
$ git fetch origin 7a94718faf15eb421087b95745cf32ce0eb99f48:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-boombuler-barcode
 * [new ref]         7a94718faf15eb421087b95745cf32ce0eb99f48 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7a94718 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild