$ git clone -n https://src.fedoraproject.org/rpms/gnome-online-accounts.git /var/lib/mock/f39-build-1577387-37962/root/chroot_tmpdir/scmroot/gnome-online-accounts
Cloning into '/var/lib/mock/f39-build-1577387-37962/root/chroot_tmpdir/scmroot/gnome-online-accounts'...
$ git fetch origin c81aace20518e989d4f2e0229acb7a275760c238:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-online-accounts
 * [new ref]         c81aace20518e989d4f2e0229acb7a275760c238 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c81aace Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild